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The Transcriptional Control Of Fertility In F-like Plasmids.

N. Willetts
Published 1977 · Biology, Medicine

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Two λtra transducing phages were characterized, one carrying the control gene traJ, and the other carrying traL traE traK, three genes of the transfer operon. DNA from these phages was used in filter hybridization assays which indicated firstly that during FinOP transfer inhibition of Flac or R100 the transcription of traJ is repressed, and secondly that in the absence of the traJ gene product, the transfer operon is not transcribed. This confirms that traJ is a positive control gene central to this complex mechanism of fertility control prevalent amongst F-like plasmids.
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